problem in understanding EJMA standard

[B.Beykaee]

Hello every one.
I have a problem in EJMA standard.
We know that p(si) and p(sc) are two pressures that above them we have in-stability.
so the limiting design pressure according to the section 4.12.1.6 will be the minimum of these two value.

but the problem is in this phrase that says :
"These equations include factors such that the ratio between the limiting design
pressure and the critical squirm pressure is approximately 2.25 for column squirm
and 1.75 for inplane squirm."



"these equations" in the above phrase related to the p(sc) and p(si) equations.
The above phrase says that :
limiting design pressure = 2.25 * critical squirm pressure
which means that design pressure is greater than critical pressure.

I really confused!
please help me.

thanks all.

 

[LittleInch]

Please decide which one of your three identical posts is in the right forum and delete the other two before they get deleted for you.

The first phrase doesn't say what you say in the second phrase. It just says the radio is 2 25. It doesn't say which one is bigger. I would assume the design pressure is lower than the critical pressure

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[B.Beykaee]

thanks LittleInch.

I think maybe in each group someone help me...
about your answer i have an other evidence about this matter. please see attached picture. i found this link in internet. please see page 6/12. para. 4.1.2

 

[LittleInch]

BB.

Site rules prevent multiple posts.

Nothing attached.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[B.Beykaee]

ok....
I am deleting them.
sorry.

https://www.sid.ir/FileServer/JE/1000820170213.pdf